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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1214

Revision 1.0 (08-30-10)

DATASHEET

Bit 7 - GP_EN - Enables the Grouped Sensors to be included during the sampling cycle.

‘0’ - All sensors in the grouped sensors will not be sampled regardless of the state of the

VOL_UP_DOWN bit.

‘1’ (default) - Grouped sensors will be sampled. Individual channels are enabled via the Group

Sampling Enable register.

Bit 6 - S7_EN - Enables the CS7 input to be included during the sampling cycle.

‘0’ - The CS7 input is not included in the sampling cycle.

‘1’ (default) - The CS7 input is included in the sampling cycle.

Bit 5 - S6_EN - Enables the CS6 input to be included during the sampling cycle.

Bit 4 - S5_EN - Enables the CS5 input to be included during the sampling cycle.

Bit 3 - S4_EN - Enables the CS4 input to be included during the sampling cycle.

Bit 2 - S3_EN - Enables the CS3 input to be included during the sampling cycle.

Bit 1 - S2_EN - Enables the CS2 input to be included during the sampling cycle.

Bit 0 - S1_EN - Enables the CS1 input to be included during the sampling cycle.

6.16

Button Configuration Register

The Button Configuration Register controls timings associated with the Capacitive Sensor channels 1

- 7 that are not Grouped.

Bits 7 - 4 - MAX_DUR_B [3:0] - (default 1010b) - Determines the maximum time that a button is

allowed to be pressed until the Capacitive Touch sensor is recalibrated as shown in Table 6.22.

Bits 3 - 0 - RPT_RATE_B[3:0] - (default 0100b) Determines the time duration between interrupt

assertions when auto repeat is enabled. The resolution is 35ms the range is from 35ms to 560ms as

shown in Table 6.23.

Table 6.21 Button Configuration Register

ADDR

R/W

B5B4B3B2B1B0

DEFAULT

22h

R/W

Button

Configuration

MAX_DUR_B[3:0]

RPT_RATE_B[3:0]

A4h

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